Question

plz help me to solve this question for my exams​

Answer 1

Answer:

can I know which chapter it is

Answer 2

$2 {x}^{3} - {x}^{2} - 10x \\ 2 {x}^{3} - 5 {x}^{2} + 4 {x}^{2} - 10x \\ {x}^{2} (2x - 5) + 2x(2x - 5) \\ (2x - 5)( {x}^{2} + 2x) \\ x(x + 2)(2x - 5)$